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Microchip Technology MADA3KP8.5CA
- Part No.:
- MADA3KP8.5CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP8.5CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
MDA3KP8.5CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array designed for high-reliability surge protection in industrial and aerospace power interfaces. It features a 8.5 V reverse standoff voltage (VWM), 9.44–10.4 V breakdown voltage (V(BR)), 14.4 V maximum clamping voltage at 208.4 A peak pulse current, and operates across –55 °C to +150 °C junction temperature. It delivers secondary lightning protection per IEC61000-4-5 with 12 Ω and 2 Ω source impedances.
For engineers reviewing the MDA3KP8.5CA datasheet, MDA3KP8.5CA pinout, MDA3KP8.5CA application, or MDA3KP8.5CA equivalent, this device supports ESD/EFT immunity per IEC61000-4-2/4-4, switching transient suppression, and RF-induced transient mitigation in DC power rails and signal lines requiring robust 3 kW surge handling.
Technical Context
The MDA3KP8.5CA is a bidirectional TVS diode array built using silicon avalanche technology, enabling sub-nanosecond response (<5 ns) to transients. Its clamping behavior is defined by a controlled avalanche breakdown at V(BR), with guaranteed VC ≤ 14.4 V at IPP = 208.4 A under 10/1000 µs waveform.
It complies with MIL-PRF-19500 screening options for high-reliability applications and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required. Polarity is defined by odd-numbered pins as cathodes, and it uses void-free UL94V-0 epoxy packaging with tin-lead or matte-tin terminations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 9.44–10.4 V @ 1 mA - Ensures predictable avalanche onset across production lots |
| VC @ IPP | 14.4 V @ 208.4 A - Limits downstream voltage stress during worst-case 10/1000 µs surge |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy surges typical of lightning-induced transients |
| ID @ VWM | 25 µA max - Minimizes standby leakage in low-power or battery-backed systems |
| TJ range | –55 °C to +150 °C - Supports operation in extended-temperature industrial and avionics environments |
| Response time | <5 ns - Clamps before sensitive ICs experience overvoltage damage |
Pinout & Package
MDA3KP8.5CA is housed in a surface-mount, void-free thermosetting epoxy package (UL94V-0) weighing ~5 g. Dimensions: 21.03–22.05 mm (L) × 6.86–7.87 mm (W) × 8.64–9.65 mm (H). Pin 1 identified by dot marking; odd-numbered pins are cathodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Reference terminal for bidirectional clamping path; connects to protected line |
| Pin 2 | Anode of Channel 1 | Common return node; ties to system ground or reference plane |
| Pin 3 | Cathode of Channel 2 | Second independent clamping path; enables dual-line or differential protection |
| Pin 4 | Anode of Channel 2 | Shared anode configuration allows compact layout for paired signal/power lines |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Protects AC-coupled or floating lines without polarity constraints; eliminates need for dual unidirectional devices |
| 3000 W peak pulse power | Handles IEC61000-4-5 Class 4 surges with 12 Ω source impedance in secondary lightning scenarios |
| MIL-PRF-19500 screening option | Enables use in defense/aerospace programs requiring lot traceability, 3σ ID screening, and wafer-level reliability validation |
| Level 1 moisture sensitivity | Allows standard SMT reflow without baking or dry-pack handling-reduces manufacturing overhead |
| Sub-5 ns response | Clamps before ESD events (IEC61000-4-2) propagate into connected logic or analog circuitry |
Applications
| Industrial Motor Drives | Aerospace Power Distribution Units |
|---|---|
Use Scenario: Protection of 24 V DC control inputs against inductive kickback from contactors and solenoids. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping transient spikes on both polarities of isolated digital inputs. Use Value: Prevents latch-up or gate oxide damage in PLC input buffers during 300–500 V, 10/1000 µs switching transients. | Use Scenario: Surge suppression on 28 V DC bus lines feeding flight-critical avionics modules. IC Role / Device Role / Timing Role: High-energy transient limiter meeting DO-160 Section 22 lightning-induced transient requirements. Use Value: Maintains <14.4 V clamping during 2 Ω source impedance Class 2 surges, preserving downstream regulator input integrity. |
| Telecom Base Station DC Feeds | Medical Imaging Power Supplies |
Use Scenario: Input protection for remote radio head (RRH) power supplies exposed to induced RF and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional clamp on primary DC input rail, coordinated with upstream fuses and filters. Use Value: Survives repeated 3 kW surges per IEC61000-4-5 while maintaining <25 µA leakage at nominal 48 V operation. | Use Scenario: Protection of high-voltage X-ray generator auxiliary rails against EFT bursts during equipment switching. IC Role / Device Role / Timing Role: Fast-response TVS placed at power entry point before isolation transformers and regulators. Use Value: Limits EFT-induced overshoot to <14.4 V within 5 ns, preventing false triggering in safety interlock circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5CA | 600 W PPP rating; same VWM and bidirectional polarity; SMB package (smaller footprint, lower thermal mass) | Suitable for consumer-grade or space-constrained designs where 3 kW surge margin is not required | Select when board area is critical and surge threat level is limited to IEC61000-4-4 EFT only |
| SMCJ8.5CA | 1500 W PPP rating; identical VWM/V(BR)/VC specs; larger SMC package with higher thermal dissipation than SMB but less than MDA | Used in mid-tier industrial controls needing >600 W but not full 3 kW capability | Choose when cost and thermal performance must be balanced against MIL-spec reliability and 3 kW compliance |
Compared with SMBJ8.5CA and SMCJ8.5CA, the MDA3KP8.5CA provides triple the peak pulse power (3000 W vs. 600/1500 W), full MIL-PRF-19500 upscreening eligibility, and verified performance under 2 Ω IEC61000-4-5 Class 2 lightning conditions-making it the only option for high-reliability, high-energy surge environments.
Availability
MDA3KP8.5CA is available at Aetrix Electronics and suitable for industrial motor drives, aerospace power distribution units, telecom base station DC feeds, and medical imaging power supplies requiring stable component supply and long-term lifecycle support.
Supply support for MDA3KP8.5CA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA series was developed specifically for mission-critical surge protection in harsh environments-emphasizing MIL-qualified reliability, 3 kW energy handling, and precise clamping performance across extreme temperature ranges.
FAQ
What is the clamping voltage of MDA3KP8.5CA at its rated peak pulse current?
The MDA3KP8.5CA has a maximum clamping voltage (VC) of 14.4 V at its rated peak pulse current (IPP) of 208.4 A under the standard 10/1000 µs waveform. This value is guaranteed across temperature and production lots, ensuring consistent overvoltage protection for downstream circuitry. The clamping performance is validated per Figure 2 in the official RF01243 datasheet.
Is MDA3KP8.5CA RoHS compliant?
Yes, MDA3KP8.5CA is RoHS compliant, indicated by the "e3" suffix in its full marking per the part nomenclature on page 2 of RF01243. The device uses annealed matte-tin plating on terminals and conforms to Directive 2011/65/EU. Lead-free assembly compatibility is confirmed via J-STD-020B Level 1 moisture sensitivity classification.
How does the bidirectional design of MDA3KP8.5CA affect its circuit implementation?
The bidirectional design of MDA3KP8.5CA allows symmetric clamping on both polarities of a signal or power line without requiring external polarity alignment. In practice, this means Pin 1 and Pin 3 serve as cathodes for two independent channels, while Pins 2 and 4 share a common anode node-enabling differential or dual-rail protection with minimal PCB routing. This eliminates the need for back-to-back unidirectional devices.
Can MDA3KP8.5CA be used for IEC61000-4-5 Class 4 lightning surge protection?
MDA3KP8.5CA supports IEC61000-4-5 Class 4 secondary lightning protection only with 12 Ω source impedance, as explicitly stated in the Applications/Benefits section of RF01243. It is not rated for Class 4 under 2 Ω or 42 Ω source impedances. For 2 Ω Class 2 compliance, it is fully qualified-verified by test data in Figure 3 derating curves and Table on page 3.
What is the junction temperature range for reliable operation of MDA3KP8.5CA?
MDA3KP8.5CA is rated for reliable operation across a junction temperature range of –55 °C to +150 °C, as specified in the Maximum Ratings table on page 2 of RF01243. This wide range supports deployment in under-hood automotive ECUs, avionics bays, and industrial enclosures without active cooling. Derating of peak pulse power begins above 25 °C per Figure 3.
MADA3KP8.5CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SMD, Gull Wing
- Series:
- MDA
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 8
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 208.4A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MADA3KP8.5CA FAQ
1.How can I place an order for MADA3KP8.5CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP8.5CA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MADA3KP8.5CA reliable?
The price and inventory of MADA3KP8.5CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP8.5CA is usually 5 days.
3.What payment methods are accepted for MADA3KP8.5CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP8.5CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP8.5CA?
MADA3KP8.5CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP8.5CA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MADA3KP8.5CA?
For technical support, including MADA3KP8.5CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP8.5CA requirements.
6.How does Aetrix verify that MADA3KP8.5CA is sourced from the original manufacturer or authorized distributors?
All MADA3KP8.5CA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MADA3KP8.5CA meets industry standards.
7.What is the process for return or replacement of MADA3KP8.5CA?
All MADA3KP8.5CA units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP8.5CA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MADA3KP8.5CA part is unused and in its original packaging.
Return procedure for MADA3KP8.5CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP8.5CA Tags
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